Brake cylinder



Nov. 25, 1930. H. A. .WAHLERT BRAKE CYLINDER Filed Sept. 3, 1 929 'FiglINV ENTOR HENRY A. WAHLERT BY ATT drical bushing in a cylindricalportion-ofthe bedframe to form the body ofthe brakecyL inder, After thebushing was thus mounted,

Patented Nov. 25, 1930 A sermon-Arron or missotmr i BRAKE cY mnnn illlpplicatioii filed September 3, 1929. Serial ii 389,915.- 1

This invention relates to the mounting of brake cylinder devices to thebed frame of railway locomotives; i Heretoforeyin building up abrakecylinder device in the bed framefof the locomotive,

it has been the practice to tightly fit a cylinthe usual piston andpiston rod and other parts of the device were inserted in the bushingand the pressure head andnon-pressure E brake cylinder? has been foundfobj ectionable head drawn tight against .the opposite ends of thebushing by means of nutshavmg screwthreaded connections with studsanchored in the bed frame, This methodof formingthe inj that it isdiflicultpand requires consider able time and labor, tofit thebrakecylinder bushing in thebed frame and that it is dif-T. iicult to obtaina suitable air tight bushmg;

The principal object ofmy invention is to provide a brake cylinder whichmay be easily assembled with the locomotivebed frame and which will befree from the above mentioned objectionable features.

Other objects and advantages will appear j in the following moredetailed description of the invention;

In the accompanying drawing, Figure 1 i a plan view of a portion of alocomotive bed frame embodying my improved brake cylinder mounting; Fig.2.,is a side elevational view of the same; Fig. 3 is a cross sectionalview 011- theline 3-3 of Fig. 2; Fig, 4 is alienlarged. detail bottomplan view of a port on of the frame, the brake 'cyllnder parts beingremoved; Fig. 5 is an enlarged fragmentary sectional view showing amodification of the as means for securing the pressure head of the lbrake cylinder to th body thereof and for tive, and Fig. 6 is a likeview illustrating a securing both to the bed frame of aloc0momodification" of the means for securing the non-pressure head ofthe brake cylinder to the bed frame.

As shown in the drawing, the locomotive bed frame may comprise a singleintegral casting having, at desired locations through- 1 out its length,integral vertically disposed anhaving openends, which. recess is adaptedto receive the bodycportion 2 of asbrake cylinder device. i

The body-portion'l is cylindrical in form andYis of such adiameter thatit willhave a slipfit with the wall 1 soi'that it maybe in-i sertedinits receiving recess and properly po- A ssierr oarro THE AMERIC RAKEYnular walls 1,each of which defines a recess sitioned without, having todrive .it i into the bed frame.-

The upper end ofthelportion is provided with an outwardly directedhorizontallydisposed annular flange 3 having a plurality of openingsformed'therein through which studs: 4, having screw-threaded connectionwith the Wall 1 of thefbed frame, extend when the por tion 2fisjinitsproper positionin the bed frame, WVhen the'portion 2 is positioned,

the flange 3engagesftheupper end of the" wall 1 and prevents unduedownward move m'ent of theportion relative to the bedjframe. Thebrakecylinderdevice also comprises a pressure head5 having a pluralityof openings through which the studs t also extend. This head'isclampedtight against thepoi tion 2 by nuts 6 havingscrew-threaded 0011- nectionwith the upper ends of the studs 4. Theqbrake cylinderydevice furthercomprises anon-pressure head 7 having afplurality of openings throughwhich bolts 8, an-

chored in the wall 1,extend, tl1e head being clamped tightlyftotheportion 2 by nuts 9 having jserew threaded connections withzthelowerendsof the bolts 8. 1 1 f Q;

In Fig: 3 of the drawing, the upper ends of the bolts-8 are shown asbeing of T-shape and arereceived within a recess lOformed in the wall 1Opening intothis recess and formed in the-bedframearenotches or slots 17having open'inner ends, which slots are adapted to receive the shanksoftheibolts Sand are portion 2 is positioned,the bolts 8 are positionedasshown, sothat whenthe portion'2 is mounted in the frame, the boltswill be pre vented :from movingout of engagement with a the bedlframep fi v v As shown in Fig. 5 of the drawing the pressurehead maybe clampedin place through each of such a width that thejheads of the boltscannotpasstherethrough. Before the the medium of bolts 8 and nuts 9instead of through the medium of the studs l and nuts 6.

Further, as shown in Fig. 6, the non-pres sure head may be clamped inplace through the medium of studs t and nuts 6 instead of through themedium of the bolts 8 andnuts 9.

Contained in the brake cylinder is the usual piston 11 having a pistonrod 12 attached thereto, the lower endportion of the rod extendingthrough a central opening in the nonpressure head and being operativelyconnected to a brake lever 13 through the medium of a push rod let. Alsocontained in the brake cylinder and interposed between the piston 11 andthe non-pressure head 7 is the usual release spring 15. Attached to thepiston 11 and clamped between the portion 2 and the non-pressure head 7and the cylindrical portion 2 is a filter device 16 for extractingforeign matter from the air which enters the nonpressure side of thebrake cylinder through the space between the piston rod and thenonpressure head.

From the foregoing description it will be seen that the several parts ofthe brake cylinder device may be made and fitted together by amanufacturer of such devices, then shipped to the user, and finallybuilt into a locomotive bed frame or the like. Since the manufacturercan supply allof the parts of the brake cylinder device they will nothave to be altered in mounting them on the bed frame, thus rendering itpossible to, assemble the brake cylinder device with the bed frame inless time and with less labor and with more accuracy than has heretoforebeen possible.

lVhile one illustrative embodiment of the invention has been describedin detail, it is not my intention to limit its scope to that embodimentor otherwise than by the terms of the ap pendedclaims.

Having now described my invention, what Iclaim as new and desire tosecure by Letters Patent, is:

1. The combination with a vehicle frame having an opening therein, of abrake cylinder device comprising a cylindrical portion insertable insaid opening, a flange on said cylindrical portion in supportingengagement with said frame, a pressure head clamped against said flange,and a non-pressure head clamped against said cylindrical portion.

2. The combination with a vehicle frame having an opening therein, of abrake cylinder device comprising a cylindrical portion insertible insaid opening, a flange on said cylindrical portion in supportingengagement with said frame, a pressure head at one end of thecylindrical portion, means anchored in said frame for securing saidcylindrical portion to said frame and .for clamping said head againstsaid flange, a non-pressure head at the other end of the cylindricalportion, and means anchored in said frame for clamping thenon-pressure'head against said cylindrical portion.

3. The combination with a vehicle frame of an annular wall integral withsaid frame defining a brake cylinder receiving recess, a brake cylinderdevice comprising a cylindrical portion insertable in the recess definedby said wall, a flange on said cylindrical portion overlapping andengaging the upper end of said wall for supporting said cylindricalportion on said frame, a pressure head at one end of the cylindricalportion, means anchored in said wall for clamping said flange to saidwall and the pressure head to the flange, a non-pressure head at theother end of the cylindrical portion, and means anchored in said wallfor clamping saidnon-pressure head against said cylindrical portion.

4. The combination with a vehicle frame, of an annular wall integralwith said frame defining a brake cylinder receiving recess, a brakecylinder device comprising a cylindrical portion fitting loosely in therecess defined by said wall, a flange on said cylindrical portionengaging the upper end of said wall and supporting the cylindricalportion on the frame, a pressure head, bolts anchored in said wallextending through said flange and head, nuts on said bolts for clampingsaid head against said flange, a non-pressure head, and means anchoredin said wall for securing said non-pressure head to said cylindricalportion.

In testimony whereof I have hereunto set my hand this twenty-sixth dayof August, 1929.

HENRY A. VVAHLERT.

